CN219242400U - Rust-proof self-tapping screw - Google Patents

Abstract

The utility model discloses an antirust self-tapping screw which comprises a head, a cylinder, a round table, a screw body, a first internal thread blind hole, an anti-loosening screw, a second internal thread blind hole, a sealing screw, an oil storage blind hole, an oil overflow through hole, an oil absorption cotton layer, an oil absorption cotton rod and balls, wherein the lower end surface of the head is provided with a coaxial cylinder, the lower end surface of the cylinder is provided with a coaxial round table, the lower end surface of the round table is provided with a coaxial screw body, the upper end surface of the round table is provided with a coaxial first internal thread blind hole, the anti-loosening screw is screwed in the first internal thread blind hole, and the bottom of the first internal thread blind hole is provided with a coaxial second internal thread blind hole. The utility model has simple structure and reasonable design, and can lead the screw to have good and long-term rust resistance.

Description

Rust-proof self-tapping screw

[ field of technology ]

The utility model relates to the technical field of antirust self-tapping screws, in particular to the technical field of antirust self-tapping screws.

[ background Art ]

The screw is a tool for fastening the parts of the device step by utilizing the physical and mathematical principles of the inclined circular rotation and friction force of the object. Screws are a common way of speaking fasteners, daily spoken words. Screws are an indispensable industrial necessity in daily life: very small screws for use in cameras, spectacles, watches, electronics, etc.; general screws for televisions, electrical products, musical instruments, furniture, etc.; as for engineering, construction and bridge, large-sized screws and nuts are used; traffic tools, airplanes, electric cars, automobiles and the like are used together by the large and small screws. Screws are an important task in industry, and as long as industry is present on earth, the function of the screw is always important. The screw is a common utility model in the production and life of people for thousands of years, and is the first utility model of human beings in terms of application fields.

The prior art self-tapping screw generally needs to face the corrosion of atmosphere and water vapor, people often plate a rust-proof layer on the screw in the production process, but the effect of the rust-proof layer is not ideal, once the screw is corroded, the fastening effect is reduced, the problems of difficult screw disassembly and the like are followed, and therefore, the rust-proof self-tapping screw is necessary to be provided.

[ utility model ]

The utility model aims to solve the problems in the prior art and provides an anti-rust self-tapping screw which can have good and long-term anti-rust performance.

In order to achieve the above purpose, the utility model provides an anti-rust self-tapping screw, which comprises a head, a cylinder, a round table, a screw body, a first internal thread blind hole, a locking screw, a second internal thread blind hole, a sealing screw, an oil storage blind hole, an oil spilling through hole, an oil absorbing cotton layer, an oil absorbing cotton rod and balls, wherein the lower end face of the head is provided with the coaxial cylinder, the lower end face of the cylinder is provided with the coaxial round table, the lower end face of the round table is provided with the coaxial screw body, the upper end face of the round table is provided with the coaxial first internal thread blind hole, the locking screw is screwed in the first internal thread blind hole, the bottom of the first internal thread blind hole is provided with the coaxial second internal thread blind hole, the sealing screw is screwed in the second internal thread blind hole, the bottom of the second internal thread blind hole is provided with the coaxial oil storage blind hole, the wall of the oil storage blind hole is provided with a plurality of oil spilling through holes, the inner wall of the oil storage blind hole is provided with an oil absorbing cotton layer, the oil spilling through hole is internally provided with the oil absorbing cotton layer connected with the oil absorbing cotton layer, and one end of the oil spilling through hole far from the oil storage blind hole is provided with balls.

Preferably, the head has a hexagonal prism shape.

Preferably, cross grooves are formed in the upper end faces of the anti-loosening screw and the sealing screw.

Preferably, the outer diameter of the cylinder is equal to the major diameter of the external thread of the screw body.

Preferably, the large diameter end of the round table is fixed on the lower end face of the cylinder, the large diameter end of the round table is equal to the outer diameter of the cylinder, the small diameter end of the round table is fixed on the upper end face of the screw body, and the small diameter of the round table is equal to the small diameter of the external thread of the screw body.

Preferably, the side wall of the cylinder is provided with an embedded sealing ring.

Preferably, the oil spilling through holes are uniformly distributed from the upper end to the lower end of the screw body, and the oil spilling through holes are uniformly distributed in a circumferential shape by taking the screw body as a circle center.

Preferably, the oil absorbing cotton stalk is close to the ball.

The utility model has the beneficial effects that: the utility model has simple structure and reasonable design, and can lead the screw to have good and long-term rust resistance; by arranging the oil absorbing cotton layer and the oil absorbing cotton rod, whether the oil in the oil storage blind hole is sufficient or not can ensure that all the oil overflow through holes overflow, and partial region oil shortage between the screw main body and the mounting hole is prevented when the oil storage blind hole is insufficient in oil storage; through the mode that sets up cylinder, round platform, because the external screw thread major diameter that the cylinder external diameter equals the screw rod main part, consequently, the mounting hole drill way can be plugged up to the cylinder, blocks external atmosphere, steam, further makes the screw rod main part be difficult for rustting.

The features and advantages of the present utility model will be described in detail by way of example with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a front view of the rust inhibitive self-tapping screw of the present utility model.

[ detailed description ] of the utility model

Referring to fig. 1, the antirust self-tapping screw comprises a head 1, a cylinder 2, a round table 3, a screw body 4, a first internal thread blind hole 101, a locking screw 11, a second internal thread blind hole 102, a sealing screw 12, an oil storage blind hole 401, an oil spilling through hole 402, an oil sucking cotton layer 41, an oil sucking cotton rod 42 and balls 43, wherein the lower end face of the head 1 is provided with the coaxial cylinder 2, the lower end face of the cylinder 2 is provided with the coaxial round table 3, the lower end face of the round table 3 is provided with the coaxial screw body 4, the upper end face of the round table 3 is provided with the coaxial first internal thread blind hole 101, the locking screw 11 is screwed in the first internal thread blind hole 101, the bottom of the first internal thread blind hole 101 is provided with the coaxial second internal thread blind hole 102, the sealing screw 12 is screwed in the second internal thread blind hole 102, the bottom of the second internal thread blind hole 102 is provided with the coaxial oil storing blind hole 401, the wall of the oil storing blind hole 401 is provided with a plurality of oil spilling through holes 402, the inner wall of the oil storing blind hole 401 is provided with a layer of the oil sucking cotton layer 41, the oil spilling through hole 41 is connected with the oil sucking cotton rod 42, and one end of the oil spilling through hole 402 is far from the oil spilling through hole 401 is provided with the balls 43.

Wherein the head 1 has a hexagonal prism shape.

Wherein, the upper end surfaces of the locking screw 11 and the sealing screw 12 are respectively provided with a cross groove 13.

Wherein the outer diameter of the cylinder 2 is equal to the large diameter of the external thread of the screw body 4.

The large-diameter end of the round table 3 is fixed on the lower end face of the cylinder 2, the outer diameter of the large-diameter end of the round table 3 is equal to that of the cylinder 2, the small-diameter end of the round table 3 is fixed on the upper end face of the screw body 4, and the small-diameter end of the round table 3 is equal to the small-diameter external thread of the screw body 4.

Wherein, the side wall of the cylinder 2 is provided with an embedded sealing ring 21.

The oil spilling through holes 402 are uniformly distributed from the upper end to the lower end of the screw body 4, and the oil spilling through holes 402 are uniformly distributed in a circumferential shape by taking the screw body 4 as a circle center.

Wherein the oil absorbing cotton stalk 42 is adjacent to the ball 43.

The working process of the utility model comprises the following steps:

in the working process of the rust-proof self-tapping screw, firstly, the anti-loosening screw 11 and the sealing screw 12 are removed, oil is filled in the oil storage blind hole 401, then, the anti-loosening screw 11 and the sealing screw 12 are reset, and then, the screw is installed, oil overflows between the screw body 4 and the installation hole along the oil overflow through hole 402 in the screw installation process, so that the screw body 4 is not easy to rust, and meanwhile, the outer diameter of the cylinder 2 is equal to the large diameter of the external thread of the screw body 4, so that the opening of the installation hole is blocked by the cylinder 2, the external atmosphere and water vapor are blocked, and the screw body 4 is not easy to rust.

The utility model has simple structure and reasonable design, and can lead the screw to have good and long-term rust resistance; by arranging the oil absorbing cotton layer 41 and the oil absorbing cotton rod 42, whether the oil in the oil storage blind hole 401 is sufficient or not, all the oil overflow through holes 402 can be ensured to overflow, and partial region oil shortage between the screw body 4 and the mounting hole is prevented when the oil storage blind hole 401 is insufficient in oil storage; through setting up cylinder 2, the mode of round platform 3, because the external screw thread major diameter that cylinder 2 external diameter equals screw rod main part 4, consequently, cylinder 2 can block up the mounting hole drill way, blocks external atmosphere, steam, further makes screw rod main part 4 be difficult for rustting.

The above embodiments are illustrative of the present utility model, and not limiting, and any simple modifications of the present utility model fall within the scope of the present utility model.

Claims (8)

1. The rust-proof self-tapping screw is characterized in that: including head (1), cylinder (2), round platform (3), screw rod main part (4), first internal thread blind hole (101), lockscrew (11), second internal thread blind hole (102), sealing screw (12), oil storage blind hole (401), oil spilling through hole (402), oil absorption cotton layer (41), oil absorption cotton pole (42), ball (43), the terminal surface is equipped with coaxial cylinder (2) under head (1), and terminal surface is equipped with coaxial round platform (3) under cylinder (2), and the terminal surface is equipped with coaxial screw rod main part (4) under round platform (3), and round platform (3) up end is equipped with coaxial first internal thread blind hole (101), has twisted lockscrew (11) in first internal thread blind hole (101) hole bottom is equipped with coaxial second internal thread blind hole (102), has twisted sealing screw (12) in second internal thread blind hole (102) hole bottom is equipped with coaxial oil storage blind hole (401), and oil storage blind hole (401) wall is equipped with a plurality of oil spilling through hole (402), and oil storage cotton blind hole (401) inner wall is equipped with one deck oil absorption cotton layer (41) oil spilling through hole (41) and oil absorption cotton layer (41) link to each other, one end of the oil spilling through hole (402) far away from the oil storage blind hole (401) is provided with a ball (43).

2. The rust inhibitive self-tapping screw according to claim 1, wherein: the head (1) is in a hexagonal prism shape.

3. The rust inhibitive self-tapping screw according to claim 1, wherein: the upper end surfaces of the anti-loose screw (11) and the sealing screw (12) are respectively provided with a cross groove (13).

4. The rust inhibitive self-tapping screw according to claim 1, wherein: the outer diameter of the cylinder (2) is equal to the large diameter of the external thread of the screw body (4).

5. The rust inhibitive self-tapping screw according to claim 1, wherein: the large diameter end of the round table (3) is fixed on the lower end face of the cylinder (2), the large diameter end of the round table (3) is equal to the outer diameter of the cylinder (2), the small diameter end of the round table (3) is fixed on the upper end face of the screw body (4), and the small diameter of the round table (3) is equal to the small diameter of the external thread of the screw body (4).

6. The rust inhibitive self-tapping screw according to claim 1, wherein: the side wall of the cylinder (2) is provided with an embedded sealing ring (21).

7. The rust inhibitive self-tapping screw according to claim 1, wherein: the oil spilling through holes (402) are uniformly distributed from the upper end to the lower end of the screw body (4), and the oil spilling through holes (402) are uniformly distributed in a circumferential shape by taking the screw body (4) as a circle center.

8. The rust inhibitive self-tapping screw according to claim 1, wherein: the oil absorption cotton rod (42) is close to the ball (43).

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